Epoxy Type B Oil Casing

The steel epoxy sleeve reinforcement and repair technology is widely used in the repair of oil and gas pipeline defects. For buried oil and gas pipelines with corrosion defects, cracks, weld defects, as well as mechanical damage such as scratches, indentations, and grooves caused by third-party influence, which have not yet caused leaks, the traditional method of treatment is to directly weld a standard steel sleeve (commonly known as a sleeve) or weld a steel plate patch to reinforce the pipeline. Due to the need for welding during the treatment process, there is a certain degree of operational risk. The steel epoxy sleeve pipeline reinforcement and repair technology is a non-fire treatment technology developed for the above-mentioned pressure pipeline defects, which has been in use since the 1970s and its reliability has withstood years of actual application testing. In recent years, it has also been widely used in China's West-to-East Natural Gas Pipeline, Shaanxi-Jingjing Pipeline, and Xin'an Oil and Gas Field. [0003] With regard to a complete steel epoxy sleeve, including a cylindrical body with exhaust holes, this cylindrical body is formed by two annular rings and connected by bolts to form the bolt connection between the annular rings. When the steel epoxy sleeve is used, an outer layer is required to wrap around the sleeve, which generally includes an inner layer of elastic tape and an outer layer of polypropylene tape, serving as the anticorrosive layer on the side of the steel epoxy sleeve. [0004] Before the gap between the steel epoxy sleeve and the pipeline is sealed, sealing material must be set at the ends of the steel epoxy sleeve, serving as the end plate or boundary for the steel epoxy sleeve.